Techno-economic modelling of a Power-to-Gas system based
on SOEC electrolysis and CO2 methanation in a RES-based
electric grid
Authors
Fabio Salomone, Emanuele Giglio, Domenico Ferrero, Massimo Santarelli, Raffaele Pirone, Samir Bensaid
Publication date
2019/12/1
Journal
Chemical Engineering Journal
Volume 377 Pages 120233 Publisher Elsevier Description
Renewable energy sources (RES) are growing rapidly as an alternative to fossil energy sources in order to disjoin the society from carbon sources. Wind and photovoltaic power generation is intermittent due to weather conditions. Therefore, remarkable centrality is given to the storage of the electric excess of production, and Power-to-Gas (P2G) systems seem to be one of the most promising technologies to achieve this purpose. In the case analysed in this research, a high temperature electrolyser based on solid oxide cells technology was considered, coupled to catalytic reactors for the hydrogenation of carbon dioxide into methane. The product is a synthetic natural gas (SNG) which could by directly injected into the natural gas distribution network.
This work investigates the coupling between a completely RES-based electric profile in a future scenario and a P2G plant to perform a comprehensive technical …